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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Patient service revenue, net | $ 316 | $ 615 | $ 619 | $ 1,271
less provision for bad debts | (56) | (111) | (111) | (229)
Net sales | 260 | 504 | 508 | 1,042
COST OF DIAGNOSTIC SERVICES | 284 | 241 | 466 | 479
Gross profit (loss) | (24) | 263 | 42 | 563
OPERATING EXPENSES | 777 | 548 | 1,440 | 1,076
OPERATING LOSS | (801) | (285) | (1,398) | (513)
OTHER INCOME (EXPENSE): |  |  |  |
Interest expense, net | (220) | (160) | (382) | (242)
Warrant revaluation | (3) | 1 | (3) | 0
Loss on extinguishment of debt | (53) | 0 | (53) | 0
Merger advisory fees | (2,603) | 0 | (2,603) | 0
Other, net | 0 | 0 | 0 | 3
Other Income (Expense) | (2,879) | (159) | (3,041) | (239)
LOSS BEFORE INCOME TAXES | (3,680) | (444) | (4,439) | (752)
INCOME TAX EXPENSE | 0 | 0 | 0 | 0
NET LOSS | (3,680) | (444) | (4,439) | (752)
TOTAL DIVIDENDS | (5,248) | 0 | (5,248) | (1,855)
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS | $ (8,928) | $ (444) | $ (9,687) | $ (2,607)
BASIC AND DILUTED LOSS PER COMMON SHARE (IN DOLLARS PER SHARE) | $ (15.35) | $ (1.03) | $ (18.77) | $ (6.10)
BASIC AND DILUTED WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING (IN SHARES) | 581,481 | 429,819 | 515,968 | 427,217
Preferred stock - series A senior |  |  |  |
OTHER INCOME (EXPENSE): |  |  |  |
TOTAL DIVIDENDS | $ (5,248) | $ 0 | $ (5,248) | $ (1,422)
Preferred stock |  |  |  |
OTHER INCOME (EXPENSE): |  |  |  |
TOTAL DIVIDENDS | $ 0 | $ 0 | $ 0 | $ (433)

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